Improvement in slate-frames



YH.-Nl. CLAY. lmpro'vemenf in Slate Frames.

Patented om. 17,1871.

qiy.

UNITED STATES HENRY M. CLAY, OF EASTON, PENNSYLVANIA.

IMPROVEMENT IN SLATE-FRAMES.

Specification forming part of Letters Patent No. 120,039, dated October1'7, 1871.

To all 'whom it may concern:

Be it known that I, HENRYv M. CLAY, of Easton, in the county ofNorthampton and State of Pennsylvania, have invented a new and usefulImprovement in School-Slates; and I do'hereby declare that the followingis a full, clear, and eX- act description thereof, which will enableothers skilled in the art to make and use the same, reference being hadto the accompanying drawing forming part of this specification.

edges of the frame by glue, or in any suitable mannenY The advantage tothe public of these corner pieces is that they may be firmly applied tothe frame and can be hung up on a hook or nail. They may be strengthenedby springs embedded therein.

Having thus described all that is necessary to a full understandingof'my invention, what I esteem to be new, and desire to protect byLetters Patent, is-

The elastic corner pieces O constructed with apertures and wings b b toadapt them for application to a slate-ame, as and for the purposespecied.

HENRY M. CLAY.

Witnesses WM. H. KELLER, J r., W. W. WILEDHAND.

